It appears the 2 minute timed pit stop has caused the most consternation of any of the enduro rules. The main reason we came up with that rule is safety. There will be some people, especially those with stock clone fuel tanks, that will need to refuel. If those people that are refueling are in a hurry, they could make mistakes and start a fire. If they have 2 minutes to do it, they can take their time and be safe about it. The second part is fairness. If someone who has a large enough tank and is an Ironman, they could run the whole enduro by themselves. Old men like me will have a tough time doing 15 minutes at a time. The two mandatory 2 minute pitstops will level the playing field for us old guys and those who have to refuel. It will be up to a teammate to time the stop, but we will have people in the tower checking that the timed pit stop is 2 minutes in length.

A suggestion has been made about a LeMans style start. Per Rick S., they used to have the karts lined up down the straightaway based on qualifying position with the driver in the kart. On a signal, a crewman would have to run across the track and start the kart. The karts lined up down the track reduced the chance that someone would try to win the race in the first corner (reduced, not eliminated). The crewman that got his kart started first got a small trophy as well.

You better hope the thing will start on the first pull. As for the 2 minute pit stop I think you should have active pit on green flags, that's what we do on dirt when we run 300 laps. You must make at least one stop.

maybe you can look into getting some folks to be assigned to 2 pit boxes (if there are 20 people thats close to 10 people) or maybe 1 to a box. these people just run off the 2 minute stop time as soon as the kart stops and turns off. kinda like the nascar officials in the pits but the official has to watch 2 cars.

After speaking with several people(most all of them racing the enduro race)that are going to run the race,they all think the 2 minute pitstops will cause alot of confusion.If you are 1 tenth a lap faster than someone and they leave the pits 5 seconds early each stop it would take you a hunderd laps to recover that.I vote on 2 pitstops with no time limit under green.There would only be a couple of people pitting on the same lap,so saftey would not be a big issue.Also i think only 2 people per team to do the stops,20 karts with 4 crewman is 80 people plus the extra drivers not running at the time.

With Endurance Karting, Johan Schwarz has the standard, timed pit stop rule, as well. All it takes for Johan is to have one person with either a stop watch or a digital watch and a clipboard who manages pit time. Upon entry to pit lane (or infield loop, I think someone had suggested), the pit manager checks off the kart number and entry time. Then, that kart has 2 minutes from that point to refuel, make adjustments, etc. After 2 minutes, the pit manager signals the kart crew to refire the engine, and the kart is off. It is entirely up to the driver of the kart, or the team members to get the attention of the pit manager for the stop.
I think Endurance Karting uses more time on each stop, maybe 4 minutes, but it is run exactly the same. It seems to work out there, so I have to think we could make it work here, too._________________CRG, Rotax #08

Yes, they use 4 minutes, but they also have 6 hours races.
It is very easy, when you enter the pit and stop your kart, you or replacement driver will be given stopwatch and kart can be started after you return stopwatch with at least 2 minutes on it.
With all the traffic in 1 hour race, it will be seconds and minutes between karts, not tens of seconds. More important will be to choose right moment for the pit stop than being 0.1s faster every lap.

Ihor might be on to something with the stopwatches. If we had a box of stopwatches in the pits, the driver that enters could grab one and start it, then the departing driver would have to present it to an official with at least 2 minutes on it before exiting the pits. The watch is then reset and put back in the box._________________Rotax Masters
Kosmic Mercury #602